Reconstruction of the giant tortoise Stupendemys geographicus. (Image: Jaime Chirinos)
Turtles are a successful model of evolution - they have existed for 220 million years...
Researchers have used fossil egg shells as a "thermometer". (Image: Erika Parfenova / iStock)
Were the dinosaurs cold-blooded like reptiles or warm-blooded like birds and...
View of the coast of the Greek island of Santorini (Image: spooh / iStock)
Many regions of the Mediterranean are already suffering from increasing drought....